Obama

President Obama’s new plan to fight climate change depends heavily on states’ devising individual approaches to meeting goals set in the nation’s capital, a strategy similar to the one he used to expand health care, often with rocky results.

The Obama administration on Monday will announce one of the strongest actions ever taken by the United States government to fight climate change, a proposed Environmental Protection Agency regulation to cut carbon pollution from the nation’s power plants 30 percent from 2005 levels by 2030, according to people briefed on the plan who spoke anonymously because they had been asked not to reveal details.

President Obama will use his executive authority to cut carbon emissions from the nation’s coal-fired power plants by up to 20 percent, according to people familiar with his plans, which will spur the creation of a state cap-and-trade program forcing industry to pay for the carbon pollution it creates.

In a major victory for the Obama administration, the Supreme Court on Tuesday upheld the authority of the Environmental Protection Agency to regulate the smog from coal plants that drifts across state lines from 28 Midwestern and Appalachian states to the East Coast.